Low‐Speed Transport of Gas Mixtures in Long Cylindrical Tubes According to the BGK Model

1969 ◽  
Vol 51 (6) ◽  
pp. 2483-2489 ◽  
Author(s):  
Lawrence H. Shendalman
Keyword(s):  
Gas Mixtures ◽  
Bgk Model ◽  
Low Speed ◽  
Cylindrical Tubes

scholarly journals A general consistent BGK model for gas mixtures

2018 ◽  
Vol 11 (6) ◽  
pp. 1377-1393 ◽  
Author(s):  
Alexander V. Bobylev ◽  
◽  
Marzia Bisi ◽  
Maria Groppi ◽  
Giampiero Spiga ◽  
...  
Keyword(s):  
Gas Mixtures ◽  
Bgk Model

Hydrodynamic equations from a BGK model for inert gas mixtures

2019 ◽  
Author(s):  
M. Bisi ◽  
A. V. Bobylev ◽  
M. Groppi ◽  
G. Spiga
Keyword(s):  
Gas Mixtures ◽  
Inert Gas ◽  
Hydrodynamic Equations ◽  
Bgk Model

scholarly journals Derivation of a BGK model for reacting gas mixtures

2014 ◽  
Vol 12 (7) ◽  
pp. 1199-1223 ◽  
Author(s):  
Stéphane Brull ◽  
Jacques Schneider
Keyword(s):  
Gas Mixtures ◽  
Bgk Model

scholarly journals Hypocoercivity for a BGK model for gas mixtures

2019 ◽  
Vol 267 (1) ◽  
pp. 119-149
Author(s):  
Liu Liu ◽  
Marlies Pirner
Keyword(s):  
Gas Mixtures ◽  
Bgk Model

A BGK model for gas mixtures

2012 ◽  
Author(s):  
S. Brull ◽  
V. Pavan ◽  
J. Schneider
Keyword(s):  
Gas Mixtures ◽  
Bgk Model

scholarly journals A Review on BGK Models for Gas Mixtures of Mono and Polyatomic Molecules

Fluids ◽  
2021 ◽  
Vol 6 (11) ◽  
pp. 393
Author(s):  
Marlies Pirner
Keyword(s):  
Boltzmann Equation ◽  
Mathematical Theory ◽  
Degrees Of Freedom ◽  
Rarefied Gas ◽  
Entropy Inequality ◽  
Gas Mixtures ◽  
Polyatomic Molecules ◽  
Bgk Model ◽  
Practical Applications ◽  
Internal Degrees Of Freedom

We consider the Bathnagar–Gross–Krook (BGK) model, an approximation of the Boltzmann equation, describing the time evolution of a single momoatomic rarefied gas and satisfying the same two main properties (conservation properties and entropy inequality). However, in practical applications, one often has to deal with two additional physical issues. First, a gas often does not consist of only one species, but it consists of a mixture of different species. Second, the particles can store energy not only in translational degrees of freedom but also in internal degrees of freedom such as rotations or vibrations (polyatomic molecules). Therefore, here, we will present recent BGK models for gas mixtures for mono- and polyatomic particles and the existing mathematical theory for these models.

A BGK Model for Gas Mixtures

2014 ◽  
Vol 132 (1) ◽  
pp. 117-125 ◽  
Author(s):  
Stéphane Brull ◽  
Jacques Schneider ◽  
Vincent Pavan
Keyword(s):  
Gas Mixtures ◽  
Bgk Model

New ultrastructural findings about Borrelia burgdorferi by cryofixation, negative staining, thin sectioning and scanning techniques

1990 ◽  
Vol 48 (3) ◽  
pp. 582-583
Author(s):  
S. F. Hayes ◽  
M. D. Corwin ◽  
T. G. Schwan ◽  
D. W. Dorward ◽  
W. Burgdorfer
Keyword(s):  
Lyme Disease ◽  
Borrelia Burgdorferi ◽  
Structural Characterization ◽  
Negative Staining ◽  
Low Speed ◽  
Thin Sectioning ◽  
Ultrastructural Findings

Characterization of Borrelia burgdorferi strains by means of negative staining EM has become an integral part of many studies related to the biology of the Lyme disease organism. However, relying solely upon negative staining to compare new isolates with prototype B31 or other borreliae is often unsatisfactory. To obtain more satisfactory results, we have relied upon a correlative approach encompassing a variety EM techniques, i.e., scanning for topographical features and cryotomy, negative staining and thin sectioning to provide a more complete structural characterization of B. burgdorferi.For characterization, isolates of B. burgdorferi were cultured in BSK II media from which they were removed by low speed centrifugation. The sedimented borrelia were carefully resuspended in stabilizing buffer so as to preserve their features for scanning and negative staining. Alternatively, others were prepared for conventional thin sectioning and for cryotomy using modified procedures. For thin sectioning, the fixative described by Ito, et al.

Reopening of Chronic Coronary Occlusions by Low-Speed Rotational Angioplasty

1994 ◽  
Vol 12 (4) ◽  
pp. 623-629 ◽  
Author(s):  
Andreas Hartmann ◽  
Martin Kaltenbach
Keyword(s):  
Low Speed
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